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Finding the Fourth Proportional to 566.01, 780.28 and 397.45

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Solution

The fourth proportional to 566.01, 780.28 and 397.45 is: 547.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.01 : 780.28 = 397.45 : x
  2. Step 2: Convert to fraction form
    566.01/780.28 = 397.45/x
  3. Step 3: Cross multiply
    566.01x = 780.28 × 397.45
  4. Step 4: Simplify right side
    566.01x = 310,119.82
  5. Step 5: Solve for x
    x = 310,119.82/566.01
  6. Step 6: Final answer
    x = 547.90

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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.