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Finding the Fourth Proportional to 582.96, 874.98 and 387.42

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Solution

The fourth proportional to 582.96, 874.98 and 387.42 is: 581.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.96 : 874.98 = 387.42 : x
  2. Step 2: Convert to fraction form
    582.96/874.98 = 387.42/x
  3. Step 3: Cross multiply
    582.96x = 874.98 × 387.42
  4. Step 4: Simplify right side
    582.96x = 338,984.75
  5. Step 5: Solve for x
    x = 338,984.75/582.96
  6. Step 6: Final answer
    x = 581.49

Related Problems

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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.