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Finding the Fourth Proportional to 658.04, 987.17 and 329.00

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Solution

The fourth proportional to 658.04, 987.17 and 329.00 is: 493.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.04 : 987.17 = 329.00 : x
  2. Step 2: Convert to fraction form
    658.04/987.17 = 329.00/x
  3. Step 3: Cross multiply
    658.04x = 987.17 × 329.00
  4. Step 4: Simplify right side
    658.04x = 324,772.35
  5. Step 5: Solve for x
    x = 324,772.35/658.04
  6. Step 6: Final answer
    x = 493.55

Related Problems

Find fourth proportional to 329.02, 493.58 and 164.50
Half scale
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Double scale
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Similar ratio
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1.5x scale

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.