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Finding the Fourth Proportional to 693.76, 1,044.74 and 603.54

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Solution

The fourth proportional to 693.76, 1,044.74 and 603.54 is: 908.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.76 : 1,044.74 = 603.54 : x
  2. Step 2: Convert to fraction form
    693.76/1,044.74 = 603.54/x
  3. Step 3: Cross multiply
    693.76x = 1,044.74 × 603.54
  4. Step 4: Simplify right side
    693.76x = 630,539.36
  5. Step 5: Solve for x
    x = 630,539.36/693.76
  6. Step 6: Final answer
    x = 908.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.