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Finding the Fourth Proportional to 760.69, 1,049.74 and 429.22

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Solution

The fourth proportional to 760.69, 1,049.74 and 429.22 is: 592.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.69 : 1,049.74 = 429.22 : x
  2. Step 2: Convert to fraction form
    760.69/1,049.74 = 429.22/x
  3. Step 3: Cross multiply
    760.69x = 1,049.74 × 429.22
  4. Step 4: Simplify right side
    760.69x = 450,569.40
  5. Step 5: Solve for x
    x = 450,569.40/760.69
  6. Step 6: Final answer
    x = 592.32

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Double scale
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1.5x scale

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.