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Finding the Fourth Proportional to 652.76, 900.84 and 387.28

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Solution

The fourth proportional to 652.76, 900.84 and 387.28 is: 534.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.76 : 900.84 = 387.28 : x
  2. Step 2: Convert to fraction form
    652.76/900.84 = 387.28/x
  3. Step 3: Cross multiply
    652.76x = 900.84 × 387.28
  4. Step 4: Simplify right side
    652.76x = 348,877.32
  5. Step 5: Solve for x
    x = 348,877.32/652.76
  6. Step 6: Final answer
    x = 534.46

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Find fourth proportional to 326.38, 450.42 and 193.64
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Double scale
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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.