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Finding the Fourth Proportional to 903.34, 1,247.02 and 605.08

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Solution

The fourth proportional to 903.34, 1,247.02 and 605.08 is: 835.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.34 : 1,247.02 = 605.08 : x
  2. Step 2: Convert to fraction form
    903.34/1,247.02 = 605.08/x
  3. Step 3: Cross multiply
    903.34x = 1,247.02 × 605.08
  4. Step 4: Simplify right side
    903.34x = 754,545.10
  5. Step 5: Solve for x
    x = 754,545.10/903.34
  6. Step 6: Final answer
    x = 835.29

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.