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Finding the Fourth Proportional to 35.57, 53.36 and 9.89

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Solution

The fourth proportional to 35.57, 53.36 and 9.89 is: 14.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    35.57 : 53.36 = 9.89 : x
  2. Step 2: Convert to fraction form
    35.57/53.36 = 9.89/x
  3. Step 3: Cross multiply
    35.57x = 53.36 × 9.89
  4. Step 4: Simplify right side
    35.57x = 527.90
  5. Step 5: Solve for x
    x = 527.90/35.57
  6. Step 6: Final answer
    x = 14.84

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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.