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Finding the Fourth Proportional to 908.70, 1,363.05 and 635.10

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Solution

The fourth proportional to 908.70, 1,363.05 and 635.10 is: 952.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.70 : 1,363.05 = 635.10 : x
  2. Step 2: Convert to fraction form
    908.70/1,363.05 = 635.10/x
  3. Step 3: Cross multiply
    908.70x = 1,363.05 × 635.10
  4. Step 4: Simplify right side
    908.70x = 865,673.06
  5. Step 5: Solve for x
    x = 865,673.06/908.70
  6. Step 6: Final answer
    x = 952.65

Related Problems

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Half scale
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Double scale
Find fourth proportional to 909.70, 1,364.55 and 636.10
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.