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Finding the Fourth Proportional to 967.02, 1,332.94 and 686.68

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Solution

The fourth proportional to 967.02, 1,332.94 and 686.68 is: 946.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.02 : 1,332.94 = 686.68 : x
  2. Step 2: Convert to fraction form
    967.02/1,332.94 = 686.68/x
  3. Step 3: Cross multiply
    967.02x = 1,332.94 × 686.68
  4. Step 4: Simplify right side
    967.02x = 915,303.24
  5. Step 5: Solve for x
    x = 915,303.24/967.02
  6. Step 6: Final answer
    x = 946.52

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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.