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Finding the Fourth Proportional to 577.57, 866.35 and 346.53

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Solution

The fourth proportional to 577.57, 866.35 and 346.53 is: 519.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.57 : 866.35 = 346.53 : x
  2. Step 2: Convert to fraction form
    577.57/866.35 = 346.53/x
  3. Step 3: Cross multiply
    577.57x = 866.35 × 346.53
  4. Step 4: Simplify right side
    577.57x = 300,216.27
  5. Step 5: Solve for x
    x = 300,216.27/577.57
  6. Step 6: Final answer
    x = 519.79

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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.