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Finding the Fourth Proportional to 888.32, 1,330.84 and 476.88

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Solution

The fourth proportional to 888.32, 1,330.84 and 476.88 is: 714.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.32 : 1,330.84 = 476.88 : x
  2. Step 2: Convert to fraction form
    888.32/1,330.84 = 476.88/x
  3. Step 3: Cross multiply
    888.32x = 1,330.84 × 476.88
  4. Step 4: Simplify right side
    888.32x = 634,650.98
  5. Step 5: Solve for x
    x = 634,650.98/888.32
  6. Step 6: Final answer
    x = 714.44

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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.