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Finding the Fourth Proportional to 760.80, 1,050.05 and 429.23

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Solution

The fourth proportional to 760.80, 1,050.05 and 429.23 is: 592.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.80 : 1,050.05 = 429.23 : x
  2. Step 2: Convert to fraction form
    760.80/1,050.05 = 429.23/x
  3. Step 3: Cross multiply
    760.80x = 1,050.05 × 429.23
  4. Step 4: Simplify right side
    760.80x = 450,712.96
  5. Step 5: Solve for x
    x = 450,712.96/760.80
  6. Step 6: Final answer
    x = 592.42

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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.