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Finding the Fourth Proportional to 901.49, 1,244.95 and 622.45

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Solution

The fourth proportional to 901.49, 1,244.95 and 622.45 is: 859.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.49 : 1,244.95 = 622.45 : x
  2. Step 2: Convert to fraction form
    901.49/1,244.95 = 622.45/x
  3. Step 3: Cross multiply
    901.49x = 1,244.95 × 622.45
  4. Step 4: Simplify right side
    901.49x = 774,909.79
  5. Step 5: Solve for x
    x = 774,909.79/901.49
  6. Step 6: Final answer
    x = 859.59

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Double scale
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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.