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Finding the Fourth Proportional to 690.58, 1,030.24 and 568.47

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Solution

The fourth proportional to 690.58, 1,030.24 and 568.47 is: 848.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.58 : 1,030.24 = 568.47 : x
  2. Step 2: Convert to fraction form
    690.58/1,030.24 = 568.47/x
  3. Step 3: Cross multiply
    690.58x = 1,030.24 × 568.47
  4. Step 4: Simplify right side
    690.58x = 585,660.53
  5. Step 5: Solve for x
    x = 585,660.53/690.58
  6. Step 6: Final answer
    x = 848.07

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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.