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Finding the Fourth Proportional to 245.65, 368.28 and 101.47

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Solution

The fourth proportional to 245.65, 368.28 and 101.47 is: 152.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.65 : 368.28 = 101.47 : x
  2. Step 2: Convert to fraction form
    245.65/368.28 = 101.47/x
  3. Step 3: Cross multiply
    245.65x = 368.28 × 101.47
  4. Step 4: Simplify right side
    245.65x = 37,369.37
  5. Step 5: Solve for x
    x = 37,369.37/245.65
  6. Step 6: Final answer
    x = 152.12

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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.