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Finding the Fourth Proportional to 777.46, 1,165.47 and 573.07

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Solution

The fourth proportional to 777.46, 1,165.47 and 573.07 is: 859.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    777.46 : 1,165.47 = 573.07 : x
  2. Step 2: Convert to fraction form
    777.46/1,165.47 = 573.07/x
  3. Step 3: Cross multiply
    777.46x = 1,165.47 × 573.07
  4. Step 4: Simplify right side
    777.46x = 667,895.89
  5. Step 5: Solve for x
    x = 667,895.89/777.46
  6. Step 6: Final answer
    x = 859.07

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1.5x scale

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.