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Finding the Fourth Proportional to 698.19, 1,045.94 and 373.11

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Solution

The fourth proportional to 698.19, 1,045.94 and 373.11 is: 558.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    698.19 : 1,045.94 = 373.11 : x
  2. Step 2: Convert to fraction form
    698.19/1,045.94 = 373.11/x
  3. Step 3: Cross multiply
    698.19x = 1,045.94 × 373.11
  4. Step 4: Simplify right side
    698.19x = 390,248.81
  5. Step 5: Solve for x
    x = 390,248.81/698.19
  6. Step 6: Final answer
    x = 558.94

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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.