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Finding the Fourth Proportional to 551.24, 821.11 and 526.28

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Solution

The fourth proportional to 551.24, 821.11 and 526.28 is: 783.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.24 : 821.11 = 526.28 : x
  2. Step 2: Convert to fraction form
    551.24/821.11 = 526.28/x
  3. Step 3: Cross multiply
    551.24x = 821.11 × 526.28
  4. Step 4: Simplify right side
    551.24x = 432,133.77
  5. Step 5: Solve for x
    x = 432,133.77/551.24
  6. Step 6: Final answer
    x = 783.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.