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Finding the Fourth Proportional to 948.43, 1,308.47 and 700.34

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Solution

The fourth proportional to 948.43, 1,308.47 and 700.34 is: 966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    948.43 : 1,308.47 = 700.34 : x
  2. Step 2: Convert to fraction form
    948.43/1,308.47 = 700.34/x
  3. Step 3: Cross multiply
    948.43x = 1,308.47 × 700.34
  4. Step 4: Simplify right side
    948.43x = 916,373.88
  5. Step 5: Solve for x
    x = 916,373.88/948.43
  6. Step 6: Final answer
    x = 966.20

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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.