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Finding the Fourth Proportional to 393.51, 587.00 and 358.12

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Solution

The fourth proportional to 393.51, 587.00 and 358.12 is: 534.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    393.51 : 587.00 = 358.12 : x
  2. Step 2: Convert to fraction form
    393.51/587.00 = 358.12/x
  3. Step 3: Cross multiply
    393.51x = 587.00 × 358.12
  4. Step 4: Simplify right side
    393.51x = 210,216.05
  5. Step 5: Solve for x
    x = 210,216.05/393.51
  6. Step 6: Final answer
    x = 534.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.