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Finding the Fourth Proportional to 603.03, 904.95 and 386.76

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Solution

The fourth proportional to 603.03, 904.95 and 386.76 is: 580.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.03 : 904.95 = 386.76 : x
  2. Step 2: Convert to fraction form
    603.03/904.95 = 386.76/x
  3. Step 3: Cross multiply
    603.03x = 904.95 × 386.76
  4. Step 4: Simplify right side
    603.03x = 349,998.46
  5. Step 5: Solve for x
    x = 349,998.46/603.03
  6. Step 6: Final answer
    x = 580.40

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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.