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Finding the Fourth Proportional to 488.76, 674.04 and 440.16

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Solution

The fourth proportional to 488.76, 674.04 and 440.16 is: 607.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.76 : 674.04 = 440.16 : x
  2. Step 2: Convert to fraction form
    488.76/674.04 = 440.16/x
  3. Step 3: Cross multiply
    488.76x = 674.04 × 440.16
  4. Step 4: Simplify right side
    488.76x = 296,685.45
  5. Step 5: Solve for x
    x = 296,685.45/488.76
  6. Step 6: Final answer
    x = 607.02

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Find fourth proportional to 244.38, 337.02 and 220.08
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Double scale
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1.5x scale

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.