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Finding the Fourth Proportional to 478.23, 717.23 and 153.51

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Solution

The fourth proportional to 478.23, 717.23 and 153.51 is: 230.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.23 : 717.23 = 153.51 : x
  2. Step 2: Convert to fraction form
    478.23/717.23 = 153.51/x
  3. Step 3: Cross multiply
    478.23x = 717.23 × 153.51
  4. Step 4: Simplify right side
    478.23x = 110,101.21
  5. Step 5: Solve for x
    x = 110,101.21/478.23
  6. Step 6: Final answer
    x = 230.23

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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.