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Finding the Fourth Proportional to 577.49, 865.90 and 288.93

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Solution

The fourth proportional to 577.49, 865.90 and 288.93 is: 433.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.49 : 865.90 = 288.93 : x
  2. Step 2: Convert to fraction form
    577.49/865.90 = 288.93/x
  3. Step 3: Cross multiply
    577.49x = 865.90 × 288.93
  4. Step 4: Simplify right side
    577.49x = 250,184.49
  5. Step 5: Solve for x
    x = 250,184.49/577.49
  6. Step 6: Final answer
    x = 433.23

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.