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Finding the Fourth Proportional to 603.72, 899.64 and 576.72

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Solution

The fourth proportional to 603.72, 899.64 and 576.72 is: 859.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.72 : 899.64 = 576.72 : x
  2. Step 2: Convert to fraction form
    603.72/899.64 = 576.72/x
  3. Step 3: Cross multiply
    603.72x = 899.64 × 576.72
  4. Step 4: Simplify right side
    603.72x = 518,840.38
  5. Step 5: Solve for x
    x = 518,840.38/603.72
  6. Step 6: Final answer
    x = 859.41

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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.