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Finding the Fourth Proportional to 458.03, 632.08 and 261.53

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Solution

The fourth proportional to 458.03, 632.08 and 261.53 is: 360.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.03 : 632.08 = 261.53 : x
  2. Step 2: Convert to fraction form
    458.03/632.08 = 261.53/x
  3. Step 3: Cross multiply
    458.03x = 632.08 × 261.53
  4. Step 4: Simplify right side
    458.03x = 165,307.88
  5. Step 5: Solve for x
    x = 165,307.88/458.03
  6. Step 6: Final answer
    x = 360.91

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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.