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Finding the Fourth Proportional to 743.04, 1,115.28 and 606.24

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Solution

The fourth proportional to 743.04, 1,115.28 and 606.24 is: 909.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    743.04 : 1,115.28 = 606.24 : x
  2. Step 2: Convert to fraction form
    743.04/1,115.28 = 606.24/x
  3. Step 3: Cross multiply
    743.04x = 1,115.28 × 606.24
  4. Step 4: Simplify right side
    743.04x = 676,127.35
  5. Step 5: Solve for x
    x = 676,127.35/743.04
  6. Step 6: Final answer
    x = 909.95

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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.