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Finding the Fourth Proportional to 468.64, 703.10 and 387.10

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Solution

The fourth proportional to 468.64, 703.10 and 387.10 is: 580.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.64 : 703.10 = 387.10 : x
  2. Step 2: Convert to fraction form
    468.64/703.10 = 387.10/x
  3. Step 3: Cross multiply
    468.64x = 703.10 × 387.10
  4. Step 4: Simplify right side
    468.64x = 272,170.01
  5. Step 5: Solve for x
    x = 272,170.01/468.64
  6. Step 6: Final answer
    x = 580.77

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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.