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Finding the Fourth Proportional to 558.08, 831.52 and 530.24

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Solution

The fourth proportional to 558.08, 831.52 and 530.24 is: 790.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.08 : 831.52 = 530.24 : x
  2. Step 2: Convert to fraction form
    558.08/831.52 = 530.24/x
  3. Step 3: Cross multiply
    558.08x = 831.52 × 530.24
  4. Step 4: Simplify right side
    558.08x = 440,905.16
  5. Step 5: Solve for x
    x = 440,905.16/558.08
  6. Step 6: Final answer
    x = 790.04

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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.