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Finding the Fourth Proportional to 527.40, 738.90 and 527.40

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Solution

The fourth proportional to 527.40, 738.90 and 527.40 is: 738.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.40 : 738.90 = 527.40 : x
  2. Step 2: Convert to fraction form
    527.40/738.90 = 527.40/x
  3. Step 3: Cross multiply
    527.40x = 738.90 × 527.40
  4. Step 4: Simplify right side
    527.40x = 389,695.86
  5. Step 5: Solve for x
    x = 389,695.86/527.40
  6. Step 6: Final answer
    x = 738.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.