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Finding the Fourth Proportional to 529.61, 790.07 and 492.32

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Solution

The fourth proportional to 529.61, 790.07 and 492.32 is: 734.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.61 : 790.07 = 492.32 : x
  2. Step 2: Convert to fraction form
    529.61/790.07 = 492.32/x
  3. Step 3: Cross multiply
    529.61x = 790.07 × 492.32
  4. Step 4: Simplify right side
    529.61x = 388,967.26
  5. Step 5: Solve for x
    x = 388,967.26/529.61
  6. Step 6: Final answer
    x = 734.44

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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.