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Finding the Fourth Proportional to 760.12, 1,137.60 and 467.81

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Solution

The fourth proportional to 760.12, 1,137.60 and 467.81 is: 700.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.12 : 1,137.60 = 467.81 : x
  2. Step 2: Convert to fraction form
    760.12/1,137.60 = 467.81/x
  3. Step 3: Cross multiply
    760.12x = 1,137.60 × 467.81
  4. Step 4: Simplify right side
    760.12x = 532,180.66
  5. Step 5: Solve for x
    x = 532,180.66/760.12
  6. Step 6: Final answer
    x = 700.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.