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Finding the Fourth Proportional to 437.40, 603.45 and 304.76

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Solution

The fourth proportional to 437.40, 603.45 and 304.76 is: 420.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.40 : 603.45 = 304.76 : x
  2. Step 2: Convert to fraction form
    437.40/603.45 = 304.76/x
  3. Step 3: Cross multiply
    437.40x = 603.45 × 304.76
  4. Step 4: Simplify right side
    437.40x = 183,908.93
  5. Step 5: Solve for x
    x = 183,908.93/437.40
  6. Step 6: Final answer
    x = 420.46

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Find fourth proportional to 218.70, 301.73 and 152.38
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.