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Finding the Fourth Proportional to 527.77, 787.96 and 436.65

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Solution

The fourth proportional to 527.77, 787.96 and 436.65 is: 651.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.77 : 787.96 = 436.65 : x
  2. Step 2: Convert to fraction form
    527.77/787.96 = 436.65/x
  3. Step 3: Cross multiply
    527.77x = 787.96 × 436.65
  4. Step 4: Simplify right side
    527.77x = 344,062.73
  5. Step 5: Solve for x
    x = 344,062.73/527.77
  6. Step 6: Final answer
    x = 651.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.