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Finding the Fourth Proportional to 412.47, 618.77 and 152.51

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Solution

The fourth proportional to 412.47, 618.77 and 152.51 is: 228.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.47 : 618.77 = 152.51 : x
  2. Step 2: Convert to fraction form
    412.47/618.77 = 152.51/x
  3. Step 3: Cross multiply
    412.47x = 618.77 × 152.51
  4. Step 4: Simplify right side
    412.47x = 94,365.90
  5. Step 5: Solve for x
    x = 94,365.90/412.47
  6. Step 6: Final answer
    x = 228.78

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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.