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Finding the Fourth Proportional to 410.15, 566.18 and 260.90

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Solution

The fourth proportional to 410.15, 566.18 and 260.90 is: 360.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.15 : 566.18 = 260.90 : x
  2. Step 2: Convert to fraction form
    410.15/566.18 = 260.90/x
  3. Step 3: Cross multiply
    410.15x = 566.18 × 260.90
  4. Step 4: Simplify right side
    410.15x = 147,712.23
  5. Step 5: Solve for x
    x = 147,712.23/410.15
  6. Step 6: Final answer
    x = 360.15

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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.