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Finding the Fourth Proportional to 760.83, 1,049.86 and 429.22

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Solution

The fourth proportional to 760.83, 1,049.86 and 429.22 is: 592.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.83 : 1,049.86 = 429.22 : x
  2. Step 2: Convert to fraction form
    760.83/1,049.86 = 429.22/x
  3. Step 3: Cross multiply
    760.83x = 1,049.86 × 429.22
  4. Step 4: Simplify right side
    760.83x = 450,620.91
  5. Step 5: Solve for x
    x = 450,620.91/760.83
  6. Step 6: Final answer
    x = 592.28

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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.