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Finding the Fourth Proportional to 556.94, 838.49 and 488.90

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Solution

The fourth proportional to 556.94, 838.49 and 488.90 is: 736.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.94 : 838.49 = 488.90 : x
  2. Step 2: Convert to fraction form
    556.94/838.49 = 488.90/x
  3. Step 3: Cross multiply
    556.94x = 838.49 × 488.90
  4. Step 4: Simplify right side
    556.94x = 409,937.76
  5. Step 5: Solve for x
    x = 409,937.76/556.94
  6. Step 6: Final answer
    x = 736.05

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.