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Finding the Fourth Proportional to 684.02, 1,024.20 and 358.74

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Solution

The fourth proportional to 684.02, 1,024.20 and 358.74 is: 537.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.02 : 1,024.20 = 358.74 : x
  2. Step 2: Convert to fraction form
    684.02/1,024.20 = 358.74/x
  3. Step 3: Cross multiply
    684.02x = 1,024.20 × 358.74
  4. Step 4: Simplify right side
    684.02x = 367,421.51
  5. Step 5: Solve for x
    x = 367,421.51/684.02
  6. Step 6: Final answer
    x = 537.15

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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.