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Finding the Fourth Proportional to 659.83, 910.15 and 555.55

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Solution

The fourth proportional to 659.83, 910.15 and 555.55 is: 766.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.83 : 910.15 = 555.55 : x
  2. Step 2: Convert to fraction form
    659.83/910.15 = 555.55/x
  3. Step 3: Cross multiply
    659.83x = 910.15 × 555.55
  4. Step 4: Simplify right side
    659.83x = 505,633.83
  5. Step 5: Solve for x
    x = 505,633.83/659.83
  6. Step 6: Final answer
    x = 766.31

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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.