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Finding the Fourth Proportional to 674.76, 929.08 and 576.28

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Solution

The fourth proportional to 674.76, 929.08 and 576.28 is: 793.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.76 : 929.08 = 576.28 : x
  2. Step 2: Convert to fraction form
    674.76/929.08 = 576.28/x
  3. Step 3: Cross multiply
    674.76x = 929.08 × 576.28
  4. Step 4: Simplify right side
    674.76x = 535,410.22
  5. Step 5: Solve for x
    x = 535,410.22/674.76
  6. Step 6: Final answer
    x = 793.48

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Find fourth proportional to 337.38, 464.54 and 288.14
Half scale
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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.