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Finding the Fourth Proportional to 356.99, 535.09 and 151.50

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Solution

The fourth proportional to 356.99, 535.09 and 151.50 is: 227.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.99 : 535.09 = 151.50 : x
  2. Step 2: Convert to fraction form
    356.99/535.09 = 151.50/x
  3. Step 3: Cross multiply
    356.99x = 535.09 × 151.50
  4. Step 4: Simplify right side
    356.99x = 81,066.14
  5. Step 5: Solve for x
    x = 81,066.14/356.99
  6. Step 6: Final answer
    x = 227.08

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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.