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Finding the Fourth Proportional to 542.04, 747 and 386.52

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Solution

The fourth proportional to 542.04, 747 and 386.52 is: 532.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.04 : 747 = 386.52 : x
  2. Step 2: Convert to fraction form
    542.04/747 = 386.52/x
  3. Step 3: Cross multiply
    542.04x = 747 × 386.52
  4. Step 4: Simplify right side
    542.04x = 288,730.44
  5. Step 5: Solve for x
    x = 288,730.44/542.04
  6. Step 6: Final answer
    x = 532.67

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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.