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Finding the Fourth Proportional to 591.30, 815.36 and 369.99

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Solution

The fourth proportional to 591.30, 815.36 and 369.99 is: 510.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.30 : 815.36 = 369.99 : x
  2. Step 2: Convert to fraction form
    591.30/815.36 = 369.99/x
  3. Step 3: Cross multiply
    591.30x = 815.36 × 369.99
  4. Step 4: Simplify right side
    591.30x = 301,673.20
  5. Step 5: Solve for x
    x = 301,673.20/591.30
  6. Step 6: Final answer
    x = 510.19

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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.