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Finding the Fourth Proportional to 555.32, 832.80 and 266.60

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Solution

The fourth proportional to 555.32, 832.80 and 266.60 is: 399.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.32 : 832.80 = 266.60 : x
  2. Step 2: Convert to fraction form
    555.32/832.80 = 266.60/x
  3. Step 3: Cross multiply
    555.32x = 832.80 × 266.60
  4. Step 4: Simplify right side
    555.32x = 222,024.48
  5. Step 5: Solve for x
    x = 222,024.48/555.32
  6. Step 6: Final answer
    x = 399.81

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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.