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Finding the Fourth Proportional to 759.74, 1,048.32 and 464.93

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Solution

The fourth proportional to 759.74, 1,048.32 and 464.93 is: 641.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    759.74 : 1,048.32 = 464.93 : x
  2. Step 2: Convert to fraction form
    759.74/1,048.32 = 464.93/x
  3. Step 3: Cross multiply
    759.74x = 1,048.32 × 464.93
  4. Step 4: Simplify right side
    759.74x = 487,390.18
  5. Step 5: Solve for x
    x = 487,390.18/759.74
  6. Step 6: Final answer
    x = 641.53

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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.