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Finding the Fourth Proportional to 556.02, 837.11 and 491.39

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Solution

The fourth proportional to 556.02, 837.11 and 491.39 is: 739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.02 : 837.11 = 491.39 : x
  2. Step 2: Convert to fraction form
    556.02/837.11 = 491.39/x
  3. Step 3: Cross multiply
    556.02x = 837.11 × 491.39
  4. Step 4: Simplify right side
    556.02x = 411,340.84
  5. Step 5: Solve for x
    x = 411,340.84/556.02
  6. Step 6: Final answer
    x = 739.80

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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.