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Finding the Fourth Proportional to 932.85, 1,399.86 and 384.93

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Solution

The fourth proportional to 932.85, 1,399.86 and 384.93 is: 577.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.85 : 1,399.86 = 384.93 : x
  2. Step 2: Convert to fraction form
    932.85/1,399.86 = 384.93/x
  3. Step 3: Cross multiply
    932.85x = 1,399.86 × 384.93
  4. Step 4: Simplify right side
    932.85x = 538,848.11
  5. Step 5: Solve for x
    x = 538,848.11/932.85
  6. Step 6: Final answer
    x = 577.64

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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.