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Finding the Fourth Proportional to 487.79, 671.48 and 437.06

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Solution

The fourth proportional to 487.79, 671.48 and 437.06 is: 601.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.79 : 671.48 = 437.06 : x
  2. Step 2: Convert to fraction form
    487.79/671.48 = 437.06/x
  3. Step 3: Cross multiply
    487.79x = 671.48 × 437.06
  4. Step 4: Simplify right side
    487.79x = 293,471.51
  5. Step 5: Solve for x
    x = 293,471.51/487.79
  6. Step 6: Final answer
    x = 601.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.