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Finding the Fourth Proportional to 591.51, 816.36 and 358.63

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Solution

The fourth proportional to 591.51, 816.36 and 358.63 is: 494.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.51 : 816.36 = 358.63 : x
  2. Step 2: Convert to fraction form
    591.51/816.36 = 358.63/x
  3. Step 3: Cross multiply
    591.51x = 816.36 × 358.63
  4. Step 4: Simplify right side
    591.51x = 292,771.19
  5. Step 5: Solve for x
    x = 292,771.19/591.51
  6. Step 6: Final answer
    x = 494.96

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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.