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Finding the Fourth Proportional to 526.95, 727.22 and 290.91

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Solution

The fourth proportional to 526.95, 727.22 and 290.91 is: 401.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.95 : 727.22 = 290.91 : x
  2. Step 2: Convert to fraction form
    526.95/727.22 = 290.91/x
  3. Step 3: Cross multiply
    526.95x = 727.22 × 290.91
  4. Step 4: Simplify right side
    526.95x = 211,554.12
  5. Step 5: Solve for x
    x = 211,554.12/526.95
  6. Step 6: Final answer
    x = 401.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.