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Finding the Fourth Proportional to 566.08, 780.54 and 487.30

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Solution

The fourth proportional to 566.08, 780.54 and 487.30 is: 671.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.08 : 780.54 = 487.30 : x
  2. Step 2: Convert to fraction form
    566.08/780.54 = 487.30/x
  3. Step 3: Cross multiply
    566.08x = 780.54 × 487.30
  4. Step 4: Simplify right side
    566.08x = 380,357.14
  5. Step 5: Solve for x
    x = 380,357.14/566.08
  6. Step 6: Final answer
    x = 671.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.