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Finding the Fourth Proportional to 953.45, 1,430.17 and 624.66

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Solution

The fourth proportional to 953.45, 1,430.17 and 624.66 is: 936.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.45 : 1,430.17 = 624.66 : x
  2. Step 2: Convert to fraction form
    953.45/1,430.17 = 624.66/x
  3. Step 3: Cross multiply
    953.45x = 1,430.17 × 624.66
  4. Step 4: Simplify right side
    953.45x = 893,375.50
  5. Step 5: Solve for x
    x = 893,375.50/953.45
  6. Step 6: Final answer
    x = 936.99

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Double scale
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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.