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Finding the Fourth Proportional to 888.17, 1,330.63 and 476.89

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Solution

The fourth proportional to 888.17, 1,330.63 and 476.89 is: 714.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.17 : 1,330.63 = 476.89 : x
  2. Step 2: Convert to fraction form
    888.17/1,330.63 = 476.89/x
  3. Step 3: Cross multiply
    888.17x = 1,330.63 × 476.89
  4. Step 4: Simplify right side
    888.17x = 634,559.62
  5. Step 5: Solve for x
    x = 634,559.62/888.17
  6. Step 6: Final answer
    x = 714.46

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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.