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Finding the Fourth Proportional to 371.55, 556.51 and 263.01

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Solution

The fourth proportional to 371.55, 556.51 and 263.01 is: 393.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.55 : 556.51 = 263.01 : x
  2. Step 2: Convert to fraction form
    371.55/556.51 = 263.01/x
  3. Step 3: Cross multiply
    371.55x = 556.51 × 263.01
  4. Step 4: Simplify right side
    371.55x = 146,364.26
  5. Step 5: Solve for x
    x = 146,364.26/371.55
  6. Step 6: Final answer
    x = 393.93

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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.