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Finding the Fourth Proportional to 959.60, 1,323.54 and 710.93

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Solution

The fourth proportional to 959.60, 1,323.54 and 710.93 is: 980.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.60 : 1,323.54 = 710.93 : x
  2. Step 2: Convert to fraction form
    959.60/1,323.54 = 710.93/x
  3. Step 3: Cross multiply
    959.60x = 1,323.54 × 710.93
  4. Step 4: Simplify right side
    959.60x = 940,944.29
  5. Step 5: Solve for x
    x = 940,944.29/959.60
  6. Step 6: Final answer
    x = 980.56

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1.5x scale

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.