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Finding the Fourth Proportional to 674.75, 931.16 and 467.87

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Solution

The fourth proportional to 674.75, 931.16 and 467.87 is: 645.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.75 : 931.16 = 467.87 : x
  2. Step 2: Convert to fraction form
    674.75/931.16 = 467.87/x
  3. Step 3: Cross multiply
    674.75x = 931.16 × 467.87
  4. Step 4: Simplify right side
    674.75x = 435,661.83
  5. Step 5: Solve for x
    x = 435,661.83/674.75
  6. Step 6: Final answer
    x = 645.66

Related Problems

Find fourth proportional to 337.38, 465.58 and 233.94
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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.