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Finding the Fourth Proportional to 437.94, 601.66 and 391.93

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Solution

The fourth proportional to 437.94, 601.66 and 391.93 is: 538.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.94 : 601.66 = 391.93 : x
  2. Step 2: Convert to fraction form
    437.94/601.66 = 391.93/x
  3. Step 3: Cross multiply
    437.94x = 601.66 × 391.93
  4. Step 4: Simplify right side
    437.94x = 235,808.60
  5. Step 5: Solve for x
    x = 235,808.60/437.94
  6. Step 6: Final answer
    x = 538.45

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.