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Finding the Fourth Proportional to 550.16, 821.14 and 526.40

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Solution

The fourth proportional to 550.16, 821.14 and 526.40 is: 785.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.16 : 821.14 = 526.40 : x
  2. Step 2: Convert to fraction form
    550.16/821.14 = 526.40/x
  3. Step 3: Cross multiply
    550.16x = 821.14 × 526.40
  4. Step 4: Simplify right side
    550.16x = 432,248.10
  5. Step 5: Solve for x
    x = 432,248.10/550.16
  6. Step 6: Final answer
    x = 785.68

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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.