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Finding the Fourth Proportional to 940.94, 1,298.46 and 526.94

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Solution

The fourth proportional to 940.94, 1,298.46 and 526.94 is: 727.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    940.94 : 1,298.46 = 526.94 : x
  2. Step 2: Convert to fraction form
    940.94/1,298.46 = 526.94/x
  3. Step 3: Cross multiply
    940.94x = 1,298.46 × 526.94
  4. Step 4: Simplify right side
    940.94x = 684,204.02
  5. Step 5: Solve for x
    x = 684,204.02/940.94
  6. Step 6: Final answer
    x = 727.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.