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Finding the Fourth Proportional to 624.04, 931.09 and 531.70

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Solution

The fourth proportional to 624.04, 931.09 and 531.70 is: 793.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.04 : 931.09 = 531.70 : x
  2. Step 2: Convert to fraction form
    624.04/931.09 = 531.70/x
  3. Step 3: Cross multiply
    624.04x = 931.09 × 531.70
  4. Step 4: Simplify right side
    624.04x = 495,060.55
  5. Step 5: Solve for x
    x = 495,060.55/624.04
  6. Step 6: Final answer
    x = 793.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.