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Finding the Fourth Proportional to 760.55, 1,049.58 and 550.67

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Solution

The fourth proportional to 760.55, 1,049.58 and 550.67 is: 759.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.55 : 1,049.58 = 550.67 : x
  2. Step 2: Convert to fraction form
    760.55/1,049.58 = 550.67/x
  3. Step 3: Cross multiply
    760.55x = 1,049.58 × 550.67
  4. Step 4: Simplify right side
    760.55x = 577,966.97
  5. Step 5: Solve for x
    x = 577,966.97/760.55
  6. Step 6: Final answer
    x = 759.94

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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.