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Finding the Fourth Proportional to 577.08, 867.24 and 288.72

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Solution

The fourth proportional to 577.08, 867.24 and 288.72 is: 433.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.08 : 867.24 = 288.72 : x
  2. Step 2: Convert to fraction form
    577.08/867.24 = 288.72/x
  3. Step 3: Cross multiply
    577.08x = 867.24 × 288.72
  4. Step 4: Simplify right side
    577.08x = 250,389.53
  5. Step 5: Solve for x
    x = 250,389.53/577.08
  6. Step 6: Final answer
    x = 433.89

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.