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Finding the Fourth Proportional to 527.72, 790.88 and 283.95

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Solution

The fourth proportional to 527.72, 790.88 and 283.95 is: 425.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.72 : 790.88 = 283.95 : x
  2. Step 2: Convert to fraction form
    527.72/790.88 = 283.95/x
  3. Step 3: Cross multiply
    527.72x = 790.88 × 283.95
  4. Step 4: Simplify right side
    527.72x = 224,574.58
  5. Step 5: Solve for x
    x = 224,574.58/527.72
  6. Step 6: Final answer
    x = 425.56

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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.