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Finding the Fourth Proportional to 710.58, 1,061.04 and 670.08

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Solution

The fourth proportional to 710.58, 1,061.04 and 670.08 is: 1,000.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.58 : 1,061.04 = 670.08 : x
  2. Step 2: Convert to fraction form
    710.58/1,061.04 = 670.08/x
  3. Step 3: Cross multiply
    710.58x = 1,061.04 × 670.08
  4. Step 4: Simplify right side
    710.58x = 710,981.68
  5. Step 5: Solve for x
    x = 710,981.68/710.58
  6. Step 6: Final answer
    x = 1,000.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.