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Finding the Fourth Proportional to 612.71, 914.59 and 526.60

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Solution

The fourth proportional to 612.71, 914.59 and 526.60 is: 786.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.71 : 914.59 = 526.60 : x
  2. Step 2: Convert to fraction form
    612.71/914.59 = 526.60/x
  3. Step 3: Cross multiply
    612.71x = 914.59 × 526.60
  4. Step 4: Simplify right side
    612.71x = 481,619.49
  5. Step 5: Solve for x
    x = 481,619.49/612.71
  6. Step 6: Final answer
    x = 786.04

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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.