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Finding the Fourth Proportional to 1,164.63, 1,748.08 and 868.47

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Solution

The fourth proportional to 1,164.63, 1,748.08 and 868.47 is: 1,303.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,164.63 : 1,748.08 = 868.47 : x
  2. Step 2: Convert to fraction form
    1,164.63/1,748.08 = 868.47/x
  3. Step 3: Cross multiply
    1,164.63x = 1,748.08 × 868.47
  4. Step 4: Simplify right side
    1,164.63x = 1,518,155.04
  5. Step 5: Solve for x
    x = 1,518,155.04/1,164.63
  6. Step 6: Final answer
    x = 1,303.55

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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.