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Finding the Fourth Proportional to 610.05, 918.91 and 555.55

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Solution

The fourth proportional to 610.05, 918.91 and 555.55 is: 836.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.05 : 918.91 = 555.55 : x
  2. Step 2: Convert to fraction form
    610.05/918.91 = 555.55/x
  3. Step 3: Cross multiply
    610.05x = 918.91 × 555.55
  4. Step 4: Simplify right side
    610.05x = 510,497.46
  5. Step 5: Solve for x
    x = 510,497.46/610.05
  6. Step 6: Final answer
    x = 836.82

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1.5x scale

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.