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Finding the Fourth Proportional to 943, 1,407.63 and 873.52

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Solution

The fourth proportional to 943, 1,407.63 and 873.52 is: 1,303.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    943 : 1,407.63 = 873.52 : x
  2. Step 2: Convert to fraction form
    943/1,407.63 = 873.52/x
  3. Step 3: Cross multiply
    943x = 1,407.63 × 873.52
  4. Step 4: Simplify right side
    943x = 1,229,581.55
  5. Step 5: Solve for x
    x = 1,229,581.55/943
  6. Step 6: Final answer
    x = 1,303.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.