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Finding the Fourth Proportional to 378.60, 570.02 and 314.16

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Solution

The fourth proportional to 378.60, 570.02 and 314.16 is: 473.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    378.60 : 570.02 = 314.16 : x
  2. Step 2: Convert to fraction form
    378.60/570.02 = 314.16/x
  3. Step 3: Cross multiply
    378.60x = 570.02 × 314.16
  4. Step 4: Simplify right side
    378.60x = 179,077.48
  5. Step 5: Solve for x
    x = 179,077.48/378.60
  6. Step 6: Final answer
    x = 473.00

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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.