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Finding the Fourth Proportional to 555.84, 767.40 and 503.22

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Solution

The fourth proportional to 555.84, 767.40 and 503.22 is: 694.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.84 : 767.40 = 503.22 : x
  2. Step 2: Convert to fraction form
    555.84/767.40 = 503.22/x
  3. Step 3: Cross multiply
    555.84x = 767.40 × 503.22
  4. Step 4: Simplify right side
    555.84x = 386,171.03
  5. Step 5: Solve for x
    x = 386,171.03/555.84
  6. Step 6: Final answer
    x = 694.75

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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.