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Finding the Fourth Proportional to 458.60, 632.73 and 400.19

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Solution

The fourth proportional to 458.60, 632.73 and 400.19 is: 552.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.60 : 632.73 = 400.19 : x
  2. Step 2: Convert to fraction form
    458.60/632.73 = 400.19/x
  3. Step 3: Cross multiply
    458.60x = 632.73 × 400.19
  4. Step 4: Simplify right side
    458.60x = 253,209.06
  5. Step 5: Solve for x
    x = 253,209.06/458.60
  6. Step 6: Final answer
    x = 552.13

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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.