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Finding the Fourth Proportional to 551.40, 757.74 and 526.02

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Solution

The fourth proportional to 551.40, 757.74 and 526.02 is: 722.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.40 : 757.74 = 526.02 : x
  2. Step 2: Convert to fraction form
    551.40/757.74 = 526.02/x
  3. Step 3: Cross multiply
    551.40x = 757.74 × 526.02
  4. Step 4: Simplify right side
    551.40x = 398,586.39
  5. Step 5: Solve for x
    x = 398,586.39/551.40
  6. Step 6: Final answer
    x = 722.86

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.