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Finding the Fourth Proportional to 25.60, 35.36 and 24.76

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Solution

The fourth proportional to 25.60, 35.36 and 24.76 is: 34.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.60 : 35.36 = 24.76 : x
  2. Step 2: Convert to fraction form
    25.60/35.36 = 24.76/x
  3. Step 3: Cross multiply
    25.60x = 35.36 × 24.76
  4. Step 4: Simplify right side
    25.60x = 875.51
  5. Step 5: Solve for x
    x = 875.51/25.60
  6. Step 6: Final answer
    x = 34.20

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Find fourth proportional to 12.80, 17.68 and 12.38
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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.