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Finding the Fourth Proportional to 555.77, 831.65 and 335.59

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Solution

The fourth proportional to 555.77, 831.65 and 335.59 is: 502.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.77 : 831.65 = 335.59 : x
  2. Step 2: Convert to fraction form
    555.77/831.65 = 335.59/x
  3. Step 3: Cross multiply
    555.77x = 831.65 × 335.59
  4. Step 4: Simplify right side
    555.77x = 279,089.67
  5. Step 5: Solve for x
    x = 279,089.67/555.77
  6. Step 6: Final answer
    x = 502.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.