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Finding the Fourth Proportional to 760, 1,140.12 and 467.68

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Solution

The fourth proportional to 760, 1,140.12 and 467.68 is: 701.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    760 : 1,140.12 = 467.68 : x
  2. Step 2: Convert to fraction form
    760/1,140.12 = 467.68/x
  3. Step 3: Cross multiply
    760x = 1,140.12 × 467.68
  4. Step 4: Simplify right side
    760x = 533,211.32
  5. Step 5: Solve for x
    x = 533,211.32/760
  6. Step 6: Final answer
    x = 701.59

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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.