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Finding the Fourth Proportional to 1,710.55, 2,565.91 and 670.46

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Solution

The fourth proportional to 1,710.55, 2,565.91 and 670.46 is: 1,005.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,710.55 : 2,565.91 = 670.46 : x
  2. Step 2: Convert to fraction form
    1,710.55/2,565.91 = 670.46/x
  3. Step 3: Cross multiply
    1,710.55x = 2,565.91 × 670.46
  4. Step 4: Simplify right side
    1,710.55x = 1,720,343.50
  5. Step 5: Solve for x
    x = 1,720,343.50/1,710.55
  6. Step 6: Final answer
    x = 1,005.72

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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.