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Finding the Fourth Proportional to 425.84, 637.54 and 288.68

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Solution

The fourth proportional to 425.84, 637.54 and 288.68 is: 432.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.84 : 637.54 = 288.68 : x
  2. Step 2: Convert to fraction form
    425.84/637.54 = 288.68/x
  3. Step 3: Cross multiply
    425.84x = 637.54 × 288.68
  4. Step 4: Simplify right side
    425.84x = 184,041.14
  5. Step 5: Solve for x
    x = 184,041.14/425.84
  6. Step 6: Final answer
    x = 432.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.