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Finding the Fourth Proportional to 951.19, 1,312.49 and 531.53

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Solution

The fourth proportional to 951.19, 1,312.49 and 531.53 is: 733.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.19 : 1,312.49 = 531.53 : x
  2. Step 2: Convert to fraction form
    951.19/1,312.49 = 531.53/x
  3. Step 3: Cross multiply
    951.19x = 1,312.49 × 531.53
  4. Step 4: Simplify right side
    951.19x = 697,621.25
  5. Step 5: Solve for x
    x = 697,621.25/951.19
  6. Step 6: Final answer
    x = 733.42

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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.