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Finding the Fourth Proportional to 747.10, 1,030.35 and 537.18

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Solution

The fourth proportional to 747.10, 1,030.35 and 537.18 is: 740.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    747.10 : 1,030.35 = 537.18 : x
  2. Step 2: Convert to fraction form
    747.10/1,030.35 = 537.18/x
  3. Step 3: Cross multiply
    747.10x = 1,030.35 × 537.18
  4. Step 4: Simplify right side
    747.10x = 553,483.41
  5. Step 5: Solve for x
    x = 553,483.41/747.10
  6. Step 6: Final answer
    x = 740.84

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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.