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Finding the Fourth Proportional to 952.56, 1,312.20 and 657.32

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Solution

The fourth proportional to 952.56, 1,312.20 and 657.32 is: 905.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.56 : 1,312.20 = 657.32 : x
  2. Step 2: Convert to fraction form
    952.56/1,312.20 = 657.32/x
  3. Step 3: Cross multiply
    952.56x = 1,312.20 × 657.32
  4. Step 4: Simplify right side
    952.56x = 862,528.74
  5. Step 5: Solve for x
    x = 862,528.74/952.56
  6. Step 6: Final answer
    x = 905.48

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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.