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Finding the Fourth Proportional to 317.61, 478.38 and 295.08

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Solution

The fourth proportional to 317.61, 478.38 and 295.08 is: 444.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.61 : 478.38 = 295.08 : x
  2. Step 2: Convert to fraction form
    317.61/478.38 = 295.08/x
  3. Step 3: Cross multiply
    317.61x = 478.38 × 295.08
  4. Step 4: Simplify right side
    317.61x = 141,160.37
  5. Step 5: Solve for x
    x = 141,160.37/317.61
  6. Step 6: Final answer
    x = 444.45

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.