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Finding the Fourth Proportional to 556.34, 835.07 and 553.77

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Solution

The fourth proportional to 556.34, 835.07 and 553.77 is: 831.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.34 : 835.07 = 553.77 : x
  2. Step 2: Convert to fraction form
    556.34/835.07 = 553.77/x
  3. Step 3: Cross multiply
    556.34x = 835.07 × 553.77
  4. Step 4: Simplify right side
    556.34x = 462,433.95
  5. Step 5: Solve for x
    x = 462,433.95/556.34
  6. Step 6: Final answer
    x = 831.21

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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.