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Finding the Fourth Proportional to 901.72, 1,353.90 and 573.16

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Solution

The fourth proportional to 901.72, 1,353.90 and 573.16 is: 860.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.72 : 1,353.90 = 573.16 : x
  2. Step 2: Convert to fraction form
    901.72/1,353.90 = 573.16/x
  3. Step 3: Cross multiply
    901.72x = 1,353.90 × 573.16
  4. Step 4: Simplify right side
    901.72x = 776,001.32
  5. Step 5: Solve for x
    x = 776,001.32/901.72
  6. Step 6: Final answer
    x = 860.58

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.