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Finding the Fourth Proportional to 245.84, 368.85 and 83.53

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Solution

The fourth proportional to 245.84, 368.85 and 83.53 is: 125.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.84 : 368.85 = 83.53 : x
  2. Step 2: Convert to fraction form
    245.84/368.85 = 83.53/x
  3. Step 3: Cross multiply
    245.84x = 368.85 × 83.53
  4. Step 4: Simplify right side
    245.84x = 30,810.81
  5. Step 5: Solve for x
    x = 30,810.81/245.84
  6. Step 6: Final answer
    x = 125.33

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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.