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Finding the Fourth Proportional to 378.51, 569.03 and 310.53

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Solution

The fourth proportional to 378.51, 569.03 and 310.53 is: 466.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    378.51 : 569.03 = 310.53 : x
  2. Step 2: Convert to fraction form
    378.51/569.03 = 310.53/x
  3. Step 3: Cross multiply
    378.51x = 569.03 × 310.53
  4. Step 4: Simplify right side
    378.51x = 176,701.47
  5. Step 5: Solve for x
    x = 176,701.47/378.51
  6. Step 6: Final answer
    x = 466.84

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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.