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Finding the Fourth Proportional to 852.75, 1,177.27 and 653.20

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Solution

The fourth proportional to 852.75, 1,177.27 and 653.20 is: 901.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.75 : 1,177.27 = 653.20 : x
  2. Step 2: Convert to fraction form
    852.75/1,177.27 = 653.20/x
  3. Step 3: Cross multiply
    852.75x = 1,177.27 × 653.20
  4. Step 4: Simplify right side
    852.75x = 768,988.19
  5. Step 5: Solve for x
    x = 768,988.19/852.75
  6. Step 6: Final answer
    x = 901.77

Related Problems

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Half scale
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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.