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Finding the Fourth Proportional to 955.67, 1,318.26 and 706.89

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Solution

The fourth proportional to 955.67, 1,318.26 and 706.89 is: 975.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.67 : 1,318.26 = 706.89 : x
  2. Step 2: Convert to fraction form
    955.67/1,318.26 = 706.89/x
  3. Step 3: Cross multiply
    955.67x = 1,318.26 × 706.89
  4. Step 4: Simplify right side
    955.67x = 931,864.81
  5. Step 5: Solve for x
    x = 931,864.81/955.67
  6. Step 6: Final answer
    x = 975.10

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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.