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Finding the Fourth Proportional to 575.49, 859.13 and 555.24

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Solution

The fourth proportional to 575.49, 859.13 and 555.24 is: 828.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.49 : 859.13 = 555.24 : x
  2. Step 2: Convert to fraction form
    575.49/859.13 = 555.24/x
  3. Step 3: Cross multiply
    575.49x = 859.13 × 555.24
  4. Step 4: Simplify right side
    575.49x = 477,024.73
  5. Step 5: Solve for x
    x = 477,024.73/575.49
  6. Step 6: Final answer
    x = 828.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.