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Finding the Fourth Proportional to 463.42, 695.20 and 258.08

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Solution

The fourth proportional to 463.42, 695.20 and 258.08 is: 387.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.42 : 695.20 = 258.08 : x
  2. Step 2: Convert to fraction form
    463.42/695.20 = 258.08/x
  3. Step 3: Cross multiply
    463.42x = 695.20 × 258.08
  4. Step 4: Simplify right side
    463.42x = 179,417.22
  5. Step 5: Solve for x
    x = 179,417.22/463.42
  6. Step 6: Final answer
    x = 387.16

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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.