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Finding the Fourth Proportional to 969.35, 1,337.22 and 654.20

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Solution

The fourth proportional to 969.35, 1,337.22 and 654.20 is: 902.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    969.35 : 1,337.22 = 654.20 : x
  2. Step 2: Convert to fraction form
    969.35/1,337.22 = 654.20/x
  3. Step 3: Cross multiply
    969.35x = 1,337.22 × 654.20
  4. Step 4: Simplify right side
    969.35x = 874,809.32
  5. Step 5: Solve for x
    x = 874,809.32/969.35
  6. Step 6: Final answer
    x = 902.47

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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.