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Finding the Fourth Proportional to 429.04, 591.30 and 387.16

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Solution

The fourth proportional to 429.04, 591.30 and 387.16 is: 533.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.04 : 591.30 = 387.16 : x
  2. Step 2: Convert to fraction form
    429.04/591.30 = 387.16/x
  3. Step 3: Cross multiply
    429.04x = 591.30 × 387.16
  4. Step 4: Simplify right side
    429.04x = 228,927.71
  5. Step 5: Solve for x
    x = 228,927.71/429.04
  6. Step 6: Final answer
    x = 533.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.