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Finding the Fourth Proportional to 575.74, 859.51 and 555.49

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Solution

The fourth proportional to 575.74, 859.51 and 555.49 is: 829.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.74 : 859.51 = 555.49 : x
  2. Step 2: Convert to fraction form
    575.74/859.51 = 555.49/x
  3. Step 3: Cross multiply
    575.74x = 859.51 × 555.49
  4. Step 4: Simplify right side
    575.74x = 477,449.21
  5. Step 5: Solve for x
    x = 477,449.21/575.74
  6. Step 6: Final answer
    x = 829.28

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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.