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Finding the Fourth Proportional to 406.86, 607.30 and 358.26

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Solution

The fourth proportional to 406.86, 607.30 and 358.26 is: 534.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.86 : 607.30 = 358.26 : x
  2. Step 2: Convert to fraction form
    406.86/607.30 = 358.26/x
  3. Step 3: Cross multiply
    406.86x = 607.30 × 358.26
  4. Step 4: Simplify right side
    406.86x = 217,571.30
  5. Step 5: Solve for x
    x = 217,571.30/406.86
  6. Step 6: Final answer
    x = 534.76

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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.