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Finding the Fourth Proportional to 458.13, 631.56 and 384.33

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Solution

The fourth proportional to 458.13, 631.56 and 384.33 is: 529.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.13 : 631.56 = 384.33 : x
  2. Step 2: Convert to fraction form
    458.13/631.56 = 384.33/x
  3. Step 3: Cross multiply
    458.13x = 631.56 × 384.33
  4. Step 4: Simplify right side
    458.13x = 242,727.45
  5. Step 5: Solve for x
    x = 242,727.45/458.13
  6. Step 6: Final answer
    x = 529.82

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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.