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Finding the Fourth Proportional to 1,065.79, 1,598.74 and 416.68

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Solution

The fourth proportional to 1,065.79, 1,598.74 and 416.68 is: 625.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065.79 : 1,598.74 = 416.68 : x
  2. Step 2: Convert to fraction form
    1,065.79/1,598.74 = 416.68/x
  3. Step 3: Cross multiply
    1,065.79x = 1,598.74 × 416.68
  4. Step 4: Simplify right side
    1,065.79x = 666,157.94
  5. Step 5: Solve for x
    x = 666,157.94/1,065.79
  6. Step 6: Final answer
    x = 625.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.