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Finding the Fourth Proportional to 437.48, 653.71 and 381.89

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Solution

The fourth proportional to 437.48, 653.71 and 381.89 is: 570.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.48 : 653.71 = 381.89 : x
  2. Step 2: Convert to fraction form
    437.48/653.71 = 381.89/x
  3. Step 3: Cross multiply
    437.48x = 653.71 × 381.89
  4. Step 4: Simplify right side
    437.48x = 249,645.99
  5. Step 5: Solve for x
    x = 249,645.99/437.48
  6. Step 6: Final answer
    x = 570.65

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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.