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Finding the Fourth Proportional to 378.56, 570.28 and 373.78

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Solution

The fourth proportional to 378.56, 570.28 and 373.78 is: 563.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    378.56 : 570.28 = 373.78 : x
  2. Step 2: Convert to fraction form
    378.56/570.28 = 373.78/x
  3. Step 3: Cross multiply
    378.56x = 570.28 × 373.78
  4. Step 4: Simplify right side
    378.56x = 213,159.26
  5. Step 5: Solve for x
    x = 213,159.26/378.56
  6. Step 6: Final answer
    x = 563.08

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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.