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Finding the Fourth Proportional to 1,038.04, 1,432.66 and 624.04

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Solution

The fourth proportional to 1,038.04, 1,432.66 and 624.04 is: 861.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038.04 : 1,432.66 = 624.04 : x
  2. Step 2: Convert to fraction form
    1,038.04/1,432.66 = 624.04/x
  3. Step 3: Cross multiply
    1,038.04x = 1,432.66 × 624.04
  4. Step 4: Simplify right side
    1,038.04x = 894,037.15
  5. Step 5: Solve for x
    x = 894,037.15/1,038.04
  6. Step 6: Final answer
    x = 861.27

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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.